Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C573

ICAO 24-bit transponder address · allocated to Korea, South

Currently assigned to HL8573 · BOEING 787-10 Dreamliner

Hex
71C573
Octal
34342563
Decimal
7,456,115
Country
KR
Tail
HL8573
Type
B78X
No current signal · last broadcast Jul 26, 15:55 UTC
Flights observed
245
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 15:55 UTC

Last known position

Most recent position reported by Mode-S 71C573.

Country allocation

The ICAO 24-bit address 71C573 falls within the block assigned to Korea, South (KR) by ICAO Annex 10, Volume III. Every aircraft registered in Korea, South receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
KAL071 Korean Air 17 2026-07-25
KAL072 Korean Air 13 2026-07-25
KAL448 - 11 2026-06-28
KAL053 Korean Air 11 2026-07-22
KAL447 - 10 2026-06-28
KAL054 Korean Air 10 2026-07-23
KAL928 Korean Air 9 2026-07-21
KAL042 Korean Air 9 2026-07-16
KAL704 - 8 2026-07-10
KAL075 Korean Air 8 2026-07-26
KAL041 - 8 2026-07-16
KAL024 - 8 2026-06-18
KAL970 Korean Air 7 2026-05-16
KAL969 Korean Air 7 2026-05-15
KAL927 Korean Air 7 2026-07-20
KAL724 - 7 2026-07-13
KAL723 - 7 2026-07-13
KAL703 - 7 2026-07-10
KAL402 - 7 2026-07-07
KAL076 Korean Air 7 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAL075 ICN → YVR Jul 26, 14:05 UTCJul 26, 15:55 UTC1h 50m
2026-07-25 KAL072 YVR → ICN Jul 25, 22:20 UTCJul 26, 09:15 UTC10h 56m
2026-07-25 KAL071 ICN → YVR Jul 25, 10:25 UTCJul 25, 20:05 UTC9h 40m
2026-07-24 KAL076 YVR → ICN Jul 24, 08:15 UTCJul 24, 18:25 UTC10h 10m
2026-07-23 KAL075 ICN → YVR Jul 23, 14:05 UTCJul 23, 23:15 UTC9h 10m
2026-07-23 KAL054 HNL → ICN Jul 23, 06:15 UTCJul 23, 08:25 UTC2h 10m
2026-07-22 KAL054 HNL → ICN Jul 22, 23:30 UTCJul 22, 23:40 UTC10m
2026-07-22 KAL053 ICN → HNL Jul 22, 12:30 UTCJul 22, 14:15 UTC1h 45m
2026-07-21 KAL072 YVR → ICN Jul 21, 22:40 UTCJul 21, 23:05 UTC25m
2026-07-21 KAL071 ICN → YVR Jul 21, 10:35 UTCJul 21, 20:05 UTC9h 30m
2026-07-21 KAL928 MXP → ICN Jul 21, 06:20 UTCJul 21, 06:45 UTC25m
2026-07-20 KAL928 MXP → ICN Jul 20, 20:25 UTCJul 21, 05:30 UTC9h 5m
2026-07-20 KAL927 ICN → MXP Jul 20, 05:05 UTCJul 20, 17:50 UTC12h 45m
2026-07-19 KAL076 YVR → ICN Jul 19, 08:15 UTCJul 19, 18:15 UTC10h 0m
2026-07-18 KAL075 ICN → YVR Jul 18, 14:05 UTCJul 18, 23:35 UTC9h 30m
2026-07-17 KAL072 YVR → ICN Jul 17, 22:10 UTCJul 18, 08:20 UTC10h 11m
2026-07-17 KAL071 ICN → YVR Jul 17, 10:25 UTCJul 17, 19:55 UTC9h 30m
2026-07-16 KAL042 SEA → ICN Jul 16, 21:35 UTCJul 17, 07:50 UTC10h 15m
2026-07-16 KAL041 ICN → SEA Jul 16, 08:05 UTCJul 16, 18:29 UTC10h 25m
2026-07-16 KAL882 - Jul 16, 04:55 UTCJul 16, 05:30 UTC35m
2026-07-16 KAL881 - Jul 16, 00:00 UTCJul 16, 00:40 UTC40m
2026-07-15 KAL076 YVR → ICN Jul 15, 08:10 UTCJul 15, 18:25 UTC10h 15m
2026-07-14 KAL075 ICN → YVR Jul 14, 14:40 UTCJul 15, 00:35 UTC9h 54m
2026-07-13 KAL042 SEA → ICN Jul 13, 20:45 UTCJul 14, 07:30 UTC10h 45m
2026-07-13 KAL041 - Jul 13, 08:15 UTCJul 13, 17:55 UTC9h 40m
2026-07-13 KAL724 - Jul 13, 04:20 UTCJul 13, 05:50 UTC1h 30m
2026-07-13 KAL723 - Jul 13, 01:20 UTCJul 13, 02:40 UTC1h 20m
2026-07-12 KAL076 YVR → ICN Jul 12, 08:10 UTCJul 12, 18:20 UTC10h 10m
2026-07-11 KAL075 ICN → YVR Jul 11, 14:15 UTCJul 11, 23:50 UTC9h 35m
2026-07-10 KAL072 YVR → ICN Jul 10, 22:00 UTCJul 11, 08:05 UTC10h 5m
2026-07-10 KAL071 - Jul 10, 19:20 UTCJul 10, 19:50 UTC30m
2026-07-10 KAL071 - Jul 10, 10:20 UTCJul 10, 12:10 UTC1h 50m
2026-07-10 KAL704 - Jul 10, 05:15 UTCJul 10, 07:10 UTC1h 55m
2026-07-10 KAL703 ICN → NRT Jul 10, 01:40 UTCJul 10, 03:30 UTC1h 50m
2026-07-09 KAL076 YVR → ICN Jul 9, 08:10 UTCJul 9, 18:25 UTC10h 15m
2026-07-08 KAL075 ICN → YVR Jul 8, 14:25 UTCJul 8, 23:30 UTC9h 5m
2026-07-07 KAL402 SYD → ICN Jul 7, 22:45 UTCJul 8, 08:55 UTC10h 10m
2026-07-07 KAL401 ICN → SYD Jul 7, 10:45 UTCJul 7, 20:40 UTC9h 55m
2026-07-06 KAL054 - Jul 6, 23:30 UTCJul 7, 08:30 UTC9h 0m
2026-07-06 KAL053 - Jul 6, 20:20 UTCJul 6, 20:35 UTC15m
2026-07-06 KAL053 - Jul 6, 12:30 UTCJul 6, 14:20 UTC1h 50m
2026-07-05 KAL072 - Jul 5, 22:10 UTCJul 6, 08:55 UTC10h 45m
2026-07-05 KAL071 ICN → YVR Jul 5, 10:10 UTCJul 5, 19:20 UTC9h 10m
2026-07-05 KAL704 - Jul 5, 05:20 UTCJul 5, 07:20 UTC2h 0m
2026-07-05 KAL703 ICN → NRT Jul 5, 01:35 UTCJul 5, 03:30 UTC1h 55m
2026-07-03 KAL072 - Jul 3, 22:10 UTCJul 4, 09:00 UTC10h 50m
2026-07-03 KAL071 ICN → YVR Jul 3, 10:10 UTCJul 3, 19:15 UTC9h 5m
2026-07-02 KAL042 SEA → ICN Jul 2, 20:45 UTCJul 3, 07:35 UTC10h 50m
2026-07-02 KAL041 ICN → SEA Jul 2, 08:30 UTCJul 2, 17:35 UTC9h 5m
2026-07-02 KAL724 KIX → ICN Jul 2, 04:00 UTCJul 2, 05:25 UTC1h 25m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the HL8573 page for operator, model, and routing details .

Mode-S 71C573 frequently asked

What is Mode-S code 71C573?
71C573 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8573.
Where is Mode-S 71C573 registered?
Mode-S code 71C573 is allocated to Korea, South (KR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 71C573 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C573, octal 34342563, decimal 7,456,115.
What flights does 71C573 operate?
Mode-S 71C573 has broadcast 20 distinct callsigns, including KAL071, KAL072, KAL448, KAL053, KAL447.